BTDBTest.KeyValueDBTest.OnlyOneWrittingTransactionPossible2 C# (CSharp) Method

        public void OnlyOneWrittingTransactionPossible2()
        {
            using (var fileCollection = new InMemoryFileCollection())
            using (IKeyValueDB db = new KeyValueDB(fileCollection))
            {
                var tr1 = db.StartTransaction();
                tr1.CreateKey(_key1);
                using (var tr2 = db.StartTransaction())
                {
                    tr1.Commit();
                    tr1.Dispose();
                    Assert.False(tr2.FindExactKey(_key1));
                    Assert.Throws<BTDBTransactionRetryException>(() => tr2.CreateKey(Key2));
                }
            }
        }